LIBGUESTFS_BACKEND=direct virt-customize -v -x --add overcloud-full.qcow2 --run-command 'subscription-manager register --username="foo" --password="bar"' --run-command 'subscription-manager attach --auto' --run-command "subscription-manager repos '--disable=*' --enable=rhel-7-server-rpms" --update --run-command 'subscription-manager remove --all' --run-command 'subscription-manager unregister'